Asics Metaspeed Sky Paris vs Nike Vaporfly 3: Half Marathon Race Test

Introduction

We took two of the most talked-about carbon racing shoes into a real race: the Brentwood Half Marathon, a hilly, breezy course out in Essex with rolling country lanes, a big downhill start and a punishing uphill finish. One tester raced in the Asics Metaspeed Sky Paris and finished in 70:30, while a second tester ran the same event in the Nike Vaporfly 3 and clocked 72:30. That gave both shoes a genuinely hard effort over roughly 21 km of up-and-down terrain, which is exactly where racing shoes either earn their place in your kit bag or fall short.

The Race Test: A Hilly Half Marathon

The Brentwood course offers about 150 metres of elevation in total, with a large downhill early on and an equally large climb in the final mile. Much of the route runs on open country roads, which makes pacing by feel a real challenge: you hold effort on the climbs and make hay on the descents. That kind of rolling terrain is a great stress test, because a good racing shoe needs both a stable, rhythmic cruising feel on the flats and enough lightness to accelerate uphill.

The event itself was well organised and well marshalled with a strong field at the front, which pushed both testers into genuinely hard racing efforts rather than comfortable tempo running. That context matters for how the shoes performed, and both came away looking strong.

Asics Metaspeed Sky Paris: Lightness and Bounce

The Metaspeed Sky Paris has become the tester’s new favourite racing shoe, the one planned for the London Marathon. What stood out most in the race was how controlled it felt at the kind of paces you need to hold for long distances. Locking into a steady cruising speed on the flatter rear sections felt effortless and rhythmical, in a way that recalls the Alphafly’s ability to help you settle into and hold a pace.

Where the shoe really earns its edge is the combination of that locked-in stability with genuine lightness. On the hills you can punch harder, accelerate, or throw in a short surge to gap a rival, and on the early downhills the shoe simply booms along with plenty of bounce. One encouraging surprise: on the hard 2K splits, the paces coming up on the watch were quicker than expected, which is a very good sign in a race shoe. It also stayed comfortable throughout with no forefoot discomfort, something that can creep in over a hard half marathon.

Nike Vaporfly 3: The Proven All-Rounder

Our second tester, running on current but not peak fitness, raced the Vaporfly 3 to a 72:30 finish and was happy with how the shoe worked over the hilly course. He has raced in it before, including a previous marathon, and still considers it the best shoe for him. The Vaporfly 3 remains a proven, comfortable race-day option that clearly delivers over the half marathon distance.

He also offered an interesting comparison: he thinks the Metaspeed Sky Paris has a lot of Vaporfly characteristics, but with slightly more aggression that some runners feel the Vaporfly lacks, potentially paired with a slightly firmer foam feel. If you have found the Vaporfly 3 not aggressive enough, the Sky Paris may be worth a look.

Durability After 125 km

The Metaspeed Sky Paris has now covered about 125 km of testing, and durability has been encouraging. The only visible wear so far is some flaking on the yellow section of one shoe’s upper, which is entirely cosmetic and no cause for concern.

One thing to watch: on previous Metaspeed versions, the rubber at the heel stopped short of the very back of the shoe, so heavy heel strikers could scuff that area. The same pattern is starting to appear here, with a little roughing up at the heel of the left shoe. It has been less noticeable than on earlier models, and even when prior versions did wear, it never affected performance.

How the Rest of the Race Kit Held Up

The tester wore an Apple Watch Ultra 2 and a Garmin Epix Pro side by side for the whole race, and both GPS traces were extremely close, splitting within seconds of each other over country lanes. The Apple Watch read roughly 100 metres longer overall, but on a course that does not run the perfectly measured line, either could be the more accurate one. Both gave reliable pace splits, which was useful for judging what was being lost on climbs and gained on descents.

The Polar H10 heart rate monitor worked well aside from one very brief drop around the 19th or 20th kilometre, at the hardest point of the race, before recovering. Sunglasses and a hat completed the kit, and everything performed as hoped.

Overall Buying Advice

Both shoes are strong race-day choices, and the right pick depends on what you value. The Metaspeed Sky Paris stands out for combining lightness with bounce and a controlled, rhythmical cruising feel, and it held up comfortably and durably over 125 km of testing. It is now the planned shoe for the London Marathon here.

The Vaporfly 3 remains a proven performer with a loyal following, ideal if you want a shoe with a long racing track record. And if the Vaporfly has ever felt slightly too soft or not aggressive enough for you, the Sky Paris is the shoe most worth comparing against it.

Conclusion

Raced back to back over a tough, hilly half marathon, both shoes delivered. The Metaspeed Sky Paris impressed with its mix of lightness, bounce, control and early durability, while the Vaporfly 3 proved once again why it stays in so many race rotations. Whichever you choose, both are more than capable of carrying you through a fast half or full marathon.